diff --git a/src/HotChocolate/Core/src/Execution.Abstractions/Execution/Extensions/CoreExecutionResultExtensions.cs b/src/HotChocolate/Core/src/Execution.Abstractions/Execution/Extensions/CoreExecutionResultExtensions.cs
index f18b6e30e81..491b9147be3 100644
--- a/src/HotChocolate/Core/src/Execution.Abstractions/Execution/Extensions/CoreExecutionResultExtensions.cs
+++ b/src/HotChocolate/Core/src/Execution.Abstractions/Execution/Extensions/CoreExecutionResultExtensions.cs
@@ -78,9 +78,9 @@ public static bool IsStreamResult(this IExecutionResult result)
     /// <summary>
     /// Expects a single GraphQL operation result.
     /// </summary>
-    public static OperationResult ExpectOperationResult(this IExecutionResult result)
+    public static IOperationResult ExpectOperationResult(this IExecutionResult result)
     {
-        if (result is OperationResult qr)
+        if (result is IOperationResult qr)
         {
             return qr;
         }
@@ -104,9 +104,9 @@ public static OperationResultBatch ExpectOperationResultBatch(this IExecutionRes
     /// <summary>
     /// Expect a stream result.
     /// </summary>
-    public static ResponseStream ExpectResponseStream(this IExecutionResult result)
+    public static IResponseStream ExpectResponseStream(this IExecutionResult result)
     {
-        if (result is ResponseStream rs)
+        if (result is IResponseStream rs)
         {
             return rs;
         }